... the inspection fields, e.g. manufacturing, metal processing, chemical industry and commodity inspection, etc.It is a gauge essential ... base (e.g. zinc, aluminum, Cr. Copper, rubber, paint, coating on the base of steel, iron, alloy and hard magnetic ... N probe)measure all electrically insulating coating layers,such as lacquer,Varnish, paint,anodizing coating on nonferrous metals,also on austenitic ...